Before I entered management, I wrote test code for car audio equipment. I can tell you for a fact that users come of with unique ways to use there equipment that the programmer never dreamed. While I would include the option of counting down from zero, I may not remember it when I executed code in another routine or sequence. You just don't look for people to do those kinds of things. While this is a bug, it is not with malice. Just keep the suggestions flowing and the product will be improved.

I do remember when GM first put the computer module in the distributor of their cars. They would periodically stop running and the computer had to either cool off or be replaced. They learned from their mistake and improved. Lets give Futaba or any MFG the same benefit